I TOTALLY agree with your observation -- if a school really wants you, they will let you know through Membership, Fellowship or some other form of Scholarship. Rankings DO MATTER in our application process, but we have seen some schools offer fellowship to #4, #5-listed schools on this forum. Conversely, some schools become so offended by where you rank them, and you have a slim chance of being accepted let-alone membership/fellowship, as a result of their "elite/snobbish reactions." Most of us know who those schools are!
If you received membership (and not fellowship), you should still feel very proud of your admission accomplishment and recognition for supporting the CGSM mission. But I have to tell you, schools use a VERY SUBJECTIVE interpretation of "mission support." The threshold is totally arbitrary. So membership, and even fellowship, is a crapshoot. If they REALLY want you, they will show the love.
Heck, I was accepted to a couple of schools and still don't know about membership/fellowship! Schools say I will get a letter from the Consortium; the Consortium says I will hear from the schools! Obviously, I am not loved enough [yet]. You can't make this stuff up.